A gas mixture consists of 48 percent CH4, 32 percent O2, 20 percent H2 on mass basis. The apparent molar mass and the gas constant of the mixture will be
1
7.14 kg/kmol and 1.16 kJ/kmol K
2
7.14 kg/kmol and 1.16 kJ/kg K
3
18.32 kg/kmol and 0.454 kJ/kmol K
4
18.32 kg/kmol and 0.454 kJ/kg K